[INFO] updating cached repository koba-e964/rust-number-theory [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/koba-e964/rust-number-theory [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/koba-e964/rust-number-theory" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/koba-e964/rust-number-theory"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/koba-e964/rust-number-theory'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/koba-e964/rust-number-theory" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/koba-e964/rust-number-theory"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/koba-e964/rust-number-theory'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6585894b5b711fd471dcb52a402a289eca26a1df [INFO] sha for GitHub repo koba-e964/rust-number-theory: 6585894b5b711fd471dcb52a402a289eca26a1df [INFO] validating manifest of koba-e964/rust-number-theory on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of koba-e964/rust-number-theory on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing koba-e964/rust-number-theory [INFO] finished frobbing koba-e964/rust-number-theory [INFO] frobbed toml for koba-e964/rust-number-theory written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/koba-e964/rust-number-theory/Cargo.toml [INFO] started frobbing koba-e964/rust-number-theory [INFO] finished frobbing koba-e964/rust-number-theory [INFO] frobbed toml for koba-e964/rust-number-theory written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/koba-e964/rust-number-theory/Cargo.toml [INFO] crate koba-e964/rust-number-theory already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking koba-e964/rust-number-theory against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/koba-e964/rust-number-theory:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] d7d63071ab4052725d277ab0b5103e17b1776ab372f90c429246d99a4366d66f [INFO] running `"docker" "start" "-a" "d7d63071ab4052725d277ab0b5103e17b1776ab372f90c429246d99a4366d66f"` [INFO] [stderr] Checking rust-number-theory v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/determinant.rs:46:9 [INFO] [stderr] | [INFO] [stderr] 46 | /// det((2, -1; 5, -4)) = -3 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 47 | / let mat = vec![vec![to_rat(2), to_rat(-1)], [INFO] [stderr] 48 | | vec![to_rat(5), to_rat(-4)]]; [INFO] [stderr] | |____________________________________________________- rustdoc does not generate documentation for statements [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/determinant.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | /// det((3, 2, 1; -1, 2, 2; -2, -3, 2)) = 33 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 54 | / let mat = vec![vec![to_rat(3), to_rat(2), to_rat(1)], [INFO] [stderr] 55 | | vec![to_rat(-1), to_rat(2), to_rat(2)], [INFO] [stderr] 56 | | vec![to_rat(-2), to_rat(-3), to_rat(2)]]; [INFO] [stderr] | |________________________________________________________________- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/determinant.rs:46:9 [INFO] [stderr] | [INFO] [stderr] 46 | /// det((2, -1; 5, -4)) = -3 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 47 | / let mat = vec![vec![to_rat(2), to_rat(-1)], [INFO] [stderr] 48 | | vec![to_rat(5), to_rat(-4)]]; [INFO] [stderr] | |____________________________________________________- rustdoc does not generate documentation for statements [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused doc comment [INFO] [stderr] --> src/determinant.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | /// det((3, 2, 1; -1, 2, 2; -2, -3, 2)) = 33 [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] 54 | / let mat = vec![vec![to_rat(3), to_rat(2), to_rat(1)], [INFO] [stderr] 55 | | vec![to_rat(-1), to_rat(2), to_rat(2)], [INFO] [stderr] 56 | | vec![to_rat(-2), to_rat(-3), to_rat(2)]]; [INFO] [stderr] | |________________________________________________________________- rustdoc does not generate documentation for statements [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/polynomial.rs:199:19 [INFO] [stderr] | [INFO] [stderr] 199 | (self as &std::fmt::Display).fmt(f) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `BigInt` [INFO] [stderr] --> src/determinant.rs:3:11 [INFO] [stderr] | [INFO] [stderr] 3 | use num::{BigInt, BigRational, One, Zero}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `num::BigInt` [INFO] [stderr] --> src/algebraic.rs:137:9 [INFO] [stderr] | [INFO] [stderr] 137 | use num::BigInt; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/polynomial.rs:199:19 [INFO] [stderr] | [INFO] [stderr] 199 | (self as &std::fmt::Display).fmt(f) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `BigInt` [INFO] [stderr] --> src/determinant.rs:3:11 [INFO] [stderr] | [INFO] [stderr] 3 | use num::{BigInt, BigRational, One, Zero}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/polynomial.rs:255:13 [INFO] [stderr] | [INFO] [stderr] 255 | let mut coef = &tmp[i + b_deg] / &lcb; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/polynomial.rs:278:13 [INFO] [stderr] | [INFO] [stderr] 278 | let mut coef = &tmp[i + b_deg] / lc; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0502]: cannot borrow `a` as immutable because it is also borrowed as mutable [INFO] [stderr] --> src/determinant.rs:28:39 [INFO] [stderr] | [INFO] [stderr] 28 | a[j][k] -= &factor * &a[i][k]; [INFO] [stderr] | ----------------------^------ [INFO] [stderr] | | | [INFO] [stderr] | | immutable borrow occurs here [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/polynomial.rs:255:13 [INFO] [stderr] | [INFO] [stderr] 255 | let mut coef = &tmp[i + b_deg] / &lcb; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/polynomial.rs:278:13 [INFO] [stderr] | [INFO] [stderr] 278 | let mut coef = &tmp[i + b_deg] / lc; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning[E0502]: cannot borrow `a` as immutable because it is also borrowed as mutable [INFO] [stderr] --> src/determinant.rs:28:39 [INFO] [stderr] | [INFO] [stderr] 28 | a[j][k] -= &factor * &a[i][k]; [INFO] [stderr] | ----------------------^------ [INFO] [stderr] | | | [INFO] [stderr] | | immutable borrow occurs here [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.46s [INFO] running `"docker" "inspect" "d7d63071ab4052725d277ab0b5103e17b1776ab372f90c429246d99a4366d66f"` [INFO] running `"docker" "rm" "-f" "d7d63071ab4052725d277ab0b5103e17b1776ab372f90c429246d99a4366d66f"` [INFO] [stdout] d7d63071ab4052725d277ab0b5103e17b1776ab372f90c429246d99a4366d66f